/usr/share/man/man3/dispatch_api.3.gz

dispatch_api(3) BSD Library Functions Manual dispatch_api(3)
NAME
dispatch_api — Designing API using dispatch
DESCRIPTION
The following is a brief summary of some of the common design
patterns to consider when designing and implementing API in
terms of dispatch queues and blocks.
A general recommendation is to allow both a callback block and
target dispat
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